反应详情

2-(2-Aminothiazol-4-yl)-2-pentyloxyiminoacetic acid (syn isomer, 15 g.), acetic anhydride (23.8 g.) and formic acid (10.7 g.) were treated in a similar manner to that of Example F-(5) to give 2-(2-formamidothiazol-4-yl)-2-pentyloxyiminoacetic acid (syn isomer, 14.7 g.), mp 125° C. (dec.).